Processing silver halide films with an aqueous phospholipid rinse solution
Various photographic films, that have already been photographically processed, can be cleaned or washed using an aqueous wash solution comprising a phospholipid in an amount of at least 50 ppm, to remove dust, dirt, or oily fingerprints. This solution can be particularly useful for rewashing color motion picture films.
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Claims
1. A photographic processing method comprising washing an already photographically processed silver halide photographic film with a wash solution comprising at least about 50 ppm of a phospholipid.
2. The method of claim 1 wherein said photographic film is a color motion picture negative or print film.
3. The method of claim 1 wherein said photographic film is a black or white, or color, negative or reversal film.
4. The method of claim 1 wherein said phospholipid is present in said wash solution in an amount of from about 100 to about 600 ppm.
5. The method of claim 1 wherein said wash solution has a pH of from about 4 to about 10.
6. The method of claim 1 wherein said wash solution comprises a mixture of phospholipids, the total concentration of phospholipids being at least about 100 ppm.
7. The method of claim 1 wherein said wash solution further comprises a nonionic or anionic surfactant in an amount of at least about 0.01 g/l.
8. The method of claim 7 wherein said wash solution further comprises two or more surfactants, and the total amount of said surfactants is at from about 0.025 to about 1 g/l.
9. The method of claim 8 wherein said wash solution comprises at least one nonionic surfactant and at least one anionic surfactant.
10. The method of claim 1 wherein said phospholipid is represented by the structure I: ##STR3## wherein R is hydrogen, a monovalent cation, or R.sub.2,
- R.sub.1 is hydrogen, a monovalent cation, or R.sub.2, and
- R.sub.2 is --CH.sub.2 CH.sub.2 R.sub.3 or --CH.sub.2 CHOHCH.sub.2 R.sub.3 wherein R.sub.3 is a tertiary amine group.
11. The method of claim 10 wherein each of R and R.sub.1 is R.sub.2, and R.sub.2 is --CH.sub.2 CH.sub.2 R.sub.3 or --CH.sub.2 CHOHCH.sub.2 R.sub.3 wherein R.sub.3 is a tertiary amine group.
12. The method of claim 10 wherein said R.sub.3 is a tertiary amine group of the structure II: ##STR4## wherein each of R.sub.4, R.sub.5, R.sub.6 and R.sub.7 is alkyl of 1 to 20 carbon atoms, cycloalkyl of 5 or 6 carbon atoms in the ring or phenyl, alkenyl of 2 to 10 carbon atoms, or R.sub.4 and R.sub.5 taken together with the nitrogen atom to which they are bonded, represent an N-heterocycle having 5 to 7 atoms in the ring, m is an integer of 0 to 20, and n is 0 or 1, provided that when n is 1, m is at least 1.
13. The method of claim 12 wherein each of R.sub.4, R.sub.5 and R.sub.6 is alkyl or 1 or 2 carbon atoms, R.sub.7 is alkyl of 1 to 20 carbon atoms, m is 2 to 20, and n is 1.
14. The method of claim 12 wherein R.sub.2 is --CH.sub.2 CHOHCH.sub.2 R.sub.3, each of R.sub.4, R.sub.5 and R.sub.6 is an alkali metal ion or an alkyl or 1 or 2 carbon atoms, R.sub.7 is alkyl of 1 to 20 carbon atoms, m is 2 to 20, and n is 1.
15. The method of claim 1 wherein said phospholipid is cocamidopropyl phosphatidyl glycerol, linoleamidopropyl phosphatidyl glycerol or cocophosphatidyl glycerol.
16. The method of claim 1 wherein said washing is carried out for up to 20 seconds at a temperature of from about 15.degree. to about 49.degree. C.
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Type: Grant
Filed: Apr 4, 1997
Date of Patent: May 12, 1998
Assignee: Eastman Kodak Company (Rochester, NY)
Inventors: Hugh G. McGuckin (Rochester, NY), John S. Badger (Rochester, NY), Edward A. Kurz (Webster, NY)
Primary Examiner: Hoa Van Le
Attorney: J. Lanny Tucker
Application Number: 8/825,851
International Classification: G03C 539;
